Improvement in machines for punching pipes



Patented Sept. 28, I875.

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NJETERS. FHOWLITNOGRAPMER. WASHINGTON. D. C.

UNITED STATES OSCAR B.- OLMSTED, OF BELOIT, WISCONSIN.

PATENT OFFICE.

IMPROVEMENT IN MACHINEB FOR PUNCHING PIPES.

. Specification forming part of Letters Patent No. 16S, [76, datedSeptember 28, 1875; application filed May 4, 1875.

To all whom it may concern:

Be it known that I, OSCAR B. OLMSTED, of

Beloit, in the county of Rock and State of Wisconsin, have inventedcertain new and useful Improvements in aMachine for Punching Pipe; and 1do hereby declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it pertains to make and use it, reference being had to theaccompanying drawings, which form part of this specification. V

My invention consists in the construction and adaptation of a machinefor punching pipe or tubing in a manner at once rapid and completewithout crushing or indenting the pipe, and producing a cleanperforation at each stroke of the punch.

parts of the die B, and pivoted at its rear end to the oscillating levera, as shown, to the opposite end of which is also pivoted the rear endof the sliding bar 0, which is actuated by the vertical lever D. G showsa section of pipe or tubifngon the machine having gone through theprocess of punching, as hereinafter specified; and F shows thepunchingdie operated by the lever This part of the machine is, however,merely to show how the punching-die is intended to be applied in workingmy invention; but constitutes no essential part of the punching deviceitself, as my pipe-punchin g machine may be attached to and operated byany ordinary power-punching machinery.

The manner of operating my'pipe-punching device is substantially asfollows: When the vertical lever D and wedge A are in the position shownat Fig. l of the drawings, the circumference of the barrel or body ofthe punching device is sufficient] y reduced or diminished to allow apipe or tube of suitathe end) the vertical lever Dis then carried-- tothe right, and by means of the bar 0- actuates the oscillating lever a,carrying the slotted end of the wedge A to the left so far as to expandthe upper and lower parts of the die B, lightly and solidly filling thetube or pipe to be punched, the slot of the wedge part A being thenpresented immediately beneath the punching-die. The slot in the end ofthe wedge A is made open for the purpose of discharging chips. Thebed-piece H has a concave bed formed in it for supporting the pipe andpunching device when in operation. The upper and lower parts of the dieB are made tapering to fit the correspondin g shape of the wedge A, andat their rear ends are rigidly fixed to the bed-piece H, and

set at an angle, so that their forward parts fit and firmlyembrace thewedge A at all times.

Having thus described the construction, arrangement, and manner ofoperating my pipepunching machine, whatv I claim as my invention, anddesire to secure by Letters Patent, 1s

1. In a pipe-punching machine, the combination of the frame H, die B,slotted wedge A, oscillating lever a, sliding bar 0, vertical levers D,E, and punch F, the several parts being constructed, arranged, andcombined to operate substantially as and for the purpose set forth anddescribed.

2. The combination and arrangement of the die B in three parts,substantially as shown and described, with the punch F, oscillatinglever a, bar (I, and lever D, the whole constructed and arranged tooperate substantially as hereinbefore specified.

In testimony that I claim the foregoing I have hereunto set my hand this29th day of April, 1875.

OSCAR B. OLMSTED.

